Water-purifying apparatus.



H. REISERT.

WATER PURIPYING APPARATUS.

APPLIoATIoN FILED IAR. a, 1911.

1,009,857. Patented Nov.23, 1911.

C"K ll'l I "I l V i 1 l i f 1 HN |Iy|l| T I I'fj,

UNITED STATES PATENT OFFICE.

HANS REISERT, 0F COLOGNE, GERMANY.

WATER-PURIFYING APPARATUS'.

To all whom it may concern.

Be it known that l, HANS REIsnRT, a subject of the Emperor of Germany,residing at Cologne, Prussia, Germany, have invented certain new anduseful Improvements in later-Purifying Apparatus, of which the followingis a specication.

This invention relates to water-purifying apparatus, and moreparticularly to continuously operating reaction apparatus, for usingsuch softening reagents, for example, as soda and calcium hydrate orbarium carbonate and calcium hydrate. While in suoli apparatus theincrease in the amount of sludge present may not decrease the activityof the reactions and may on the other hand promote the chemical action,it does have the disadvantage yof rendering the clarifying of thesoftened water difficult or incomplete and causing the filter employedto clog too rapidly.

The object of this invention isto provide simple means for relieving thetreated but dirty water of its burden of mechanical im purties, or alarge portion thereof, so that the filtering operation can be performedsuccessfully and without loading the filter with too much material.

The preferred form of the invention in, cludes an inverted hollow conein the reaction tank and uptakes of a particular rclation located at thecentral and outer regions of the cone.

lln the accompanying drawing Figures 1, 2 and 3 illustrate in verticalsection three forms of this specific embodiment of the invention.

Tn Fig. l, a is the reaction`\tank, and nl is an intake for the mixtureof raw water, lime water and soda solution, which intake pipe maydescend centrally through lthe tank and preferably discharges downwardclose to the bottom so as to produce a swirl, in order to keep thesludge and deposit in motion and thuis` produce a better and quickerchemical reaction. 0f course, the reagents may be introduced into thereaction tank in any other suitable way. The sludge may be drawn offfrom time to time from the bottom of the tank through a suitable pipe bymeans ofa valve 11. At a-suit` able height in the tank is disposed ahollow inverted cone Je, which is provided with openings at its centraland outer parts- From the central opening an uptake r Specification ofLetters Patent.

Application led March 9, 1911.

Patented Nov. 28, 1911.

serial No. 313,393.

tends downward into the chamber below the cone for a suitable distance,and from the outer openings, preferably two in number, the uptakes s, sextend well into the upper part of the chamber above the cone. Thecombined areas of the restricted exits from the lower chamber, affordedby the passages r and s s in this particular instance, are inateriallyless than the cross-section of the tank, which of course is thecross-section of the upward fiowing column of water. Preferably, thoughnot necessarily, the area of the annular passage within the pipe risequal to the combined areas of the pipes s, s. Thus, it will be seen,conduits are provided leading from lower and higher `levels in the lowerchamber and discharging at lower and higher levels, respectively, in theupper chamber. The inlet ends of the pipes s, s, are shown materiallyabove the inlet end of thc pipe fr, and the outlets of s, s arematerially above the outlet of r and in the upper cylindrical part ofthe upper chamber. It follows that at the level of the lower end of piper, the upflowing column of sludge-burdened water in effect divides intotwo parts. One part flows upward through r, and spreads out into thechamber above the cone. The other stream continues upward below the coneand passes out from the lower chamber through the restricted exits s, s.The streams preferably reunite in the upper chamber at the level of theupper ends of the pipes s s. ln this way two zones of velocitymaterially lower than the velocity of the column are afforded. Referringto the drawing for illustration, and as* suming that half the waterflows through r, and the other half through a, e, it follows that thevelocity of the water in the zones between A-B and CHI), and betweenAEw-F and G-H is approximately half of the ve locity of the column belowA-B. There* fore, one-half of the water deposits or esn capes from itsburden at the lower zone above .fl-B, and the other part in" the zoneabove the cone and below the upper ends of s, s. The material that iscarried through the pipe 1- over the cone drops back on the latter andby reason of the self-clearing in clination thereof slidesback into thelower chamber. The water, in large measure freed from mechanicalimpurities.` now flows finan the upper chamber to the filter (notshown).

Fig. 2 shows similar apparatus more particularly designed for use withbariuln carbonate and calcium hydrate. In ,view of the,

, cannot rise by reason of .the density and than the upper ends of thepipes s, s.

high specific gravity of this sludge. This pipe affords a discharge fordeposit on the upper side of the cone separate and distinct from theuptakes for the water. Instead of the single pipe r, I here show twopipes 1", r aifording the same cross-section as the an- .nular passagein the pipe r and located at the central part of the cone at oppositesides of the pipe t. The discharge ends of the pipes r, r are somewhathigher than the upper end of the discharge t. In this form of apparatusthe intake pipe d may be located mainly outside of the tank.

Fig. 3 shows how the sludgel may be removed from the cone through a pipeg, and either delivered' outside the apparatus or returned into thelowerchamber. Here the intake pipe r2, corresponding in function to 7 of Fig.1 and 1", r of Fig. 2, is shown as vextending upward somewhat above thecone and being provided with a deflector cap c. In` this way the pipesr2 and g are lrendered even more distinct in function, since it will bepractically impossible for any of the material to return through r2.However, the upper end of the pipe r2 is materially lower The pipe r2may be extended downward into the lower chamber for varying distances,according to the particular conditions for which the tank is designed.It may extend considerably lower than is shown in the drawing, ifdesired. l

In Figs. 2 and 3 the'reagents may be prepared andv introduced into the'reaction chamber in any suitable way.

Numerous other embodiments of the invention are possible, and manychanges in forms, proportions, sizes, details, arrangements, functionsand operation may be made without departing from the invention.

What is claimed as new is:

1. Settling apparatus comprising a chamber and means for causing thewater to flow upward therein, and exits leading from the chamber, partthereof at a relatively lower level and centrally of the chamber andpart at a relatively higher level and at the outer parts of the chamber,said exits having a combined cross-section materially less than thechamber, whereby a zone of materially lowered velocity is aiorded in thesaid chamber between the levels of theexits, and an upper settlingchamber` into the central part of which the lower exits open.

2. Settling apparatus comprising a chamupward therein, and exits leadingfrom the chamber, part thereof at a relatively lower level and centrallyof the chamber and part at a relatively higher level and at the outerparts of the chamber, said exits having a combined cross-sectionmaterially less than the chamber, whereby a zone of materially loweredvelocity is afforded in the said `chamber between the levels of theexits, and an upper settling chamber into the central part of which thelower exits open, the bottom of said upper settling chamber havin aself-clearing inclination.

ber and means 'for causing the water to flow upward therein, and exitsleading from the chamber, part thereof at a relatively lower level andcentrally of the chamber and part at a relatively higher level and atthe outer parts of the chamber, said exits having a combinedcross-section materially less than the chamber, whereby a zone ofmaterially lowered velocity is afforded in the said chamber between thelevels of the exits, and an upper settling chamber into the central partof which the lower exits open, the bota self-clearing inclination, andmeans for conducting deposit fromthe'lowest part of the upper settlingchamber. i

4. Water-purifying apparatus, comprising two chambers one above theother and means for causing the water to flow upward therein, anduptakes connectingthe chambers and of a combined cross-sectionmaterially less than the cross-section ofthe lower chamber, said uptakesbeing arranged in sets4 leading from the lower chamber atlower andhigher levels and discharging into the -upper chamber at lower andhigher are formed in the lower chamber between the levels of the inletsof the uptakes and in the upper chamber between the levels of theoutlets of the uptakes.

5. Water-purifying apparatus, comprismeans for causing the water to flowupward therein, and uptakes connecting the chambers and of a combinedcross-section materially less than the cross-section ofthe lowerchamber, said uptakes being ,arranged in sets leading from the lowerchamber at lower and higher levels: and discharging into the upperchamber at lower and higher levels respectively, whereby settling zonesare formed in the lower chamber between the upper chamber between thelevels of the youtlets of the uptakes, the upper chamber having a bottomwith a self-clearing inclination.

3. Settling apparatus comprising a chamlevels respectively, wherebysettling zonesj ing two chambers one above the other and.

ber and means for causing the water to flow tom of said upper settlingchamber having the levels of the inlets of the uptakes and in 6.Improved water-purifying .apparatus y having means whereby the waterHows upward therein and including a reaction tank having an invertedhollow cone therein dividing the interior of the tank into upper andlower chambers, and exits from the lower chamber of a combined area lessthan the cross-section of the tank and arranged in sets, one set leadingfrom the lower cha-mber at a relatively higher level and at the `outerpart of the cone and the other at a lli relatively lower level throughthe central part of the cone, whereby a zone ofmaterially lessenedvelocity is afforded below the cone, and the latter set communicatingwith a settling zone of materially lessened ve loeity peculiar, to thatset above the cone.

7. Improved water-purifying apparatus having means whereby the waterflows upward therein andinclnding a reaction tank having an invertedhollow cone pointing downward therein dividing the interior of the tankinto npperand lower chambers, and exits from the lower chamber ci acornbned area less than the cross-section of the tank and arranged insets, one .set leading from the lower chamber at a relatively higherlevel and at the outer part of the cone and the other at a relativelylower level through the central part of the cone, whereby a zone ofmaterially lessened velocity is afforded below the cone, and the latterset communicating with a settling zone of materially lessened velocitypeculiar to that set above the cone, and a sludge discharge distinctfrom said exits leading from the low part of the upper chamber at thecentral part of the cone.

8. Improved water-purifying apparatus,

- comprising a reaction tank and means whereby the water flows upwardtherein, an inverted hollow cone dividing the interior of the tank intolower and upper chambers, and uptake communications of a combinedcross-section less than the cross-section of the tank, saidcommunications being divided between the central and outer regions ofthe cone and leading from the lower chamber at lower and higher levelsinto the upper chamber at lower and higher levels respectively, wherebyzones ot' lowered velocity are afforded in the upper part of the lowerchamber and in the lower part of the upper chamber. l

9. Improved water-purifying apparatus, comprising a reaction tank andmeans whereby the water flows upward therein, an inverted hollow conedividing the interior of the tank into lower and upper chambers, andhaving an opening or openings at its central portion for admitting waterfrom the lower chamber into the lower part of the upper chamber, and anuptake or uptakes leading from the lower chamber at the outer part ofthe cone into the upper part of the upper chamber, whereby zones oflowered velocity are afli'orded in the upper part of the lower chamberand in the lower part of the upper chamber.

10. Improved water-purifying apparatus, comprising a reaction tank andmeans whereby the water flows upward therein, an inverted hollow conedividing the interior of the tank into lower and upper chambers, andhaving an opening or openings at its central portion for admitting waterfrom.

the lower chamber into the lower part of the upper chamber, and otheropenings through the outer part of the cone, and uptakes leading fromthese last openings into the upper part of the upper chamber, wherebyZones of lowered velocity are` afforded in the upper part of the lowerchamber and in the lower part of the upper chamber.

11. Improved water-purifying apparatus, comprising a reaction tank andmeans whereby the water flows upward therein, an inverted hollow conedividing the interior of the tank into lower and upper chambers, anuptake or uptakes extending downward from the central part of the conefor a distance into the lower chamber, and an uptake or uptakesextending upward from the outer part of the cone well into the upperpart of the upper chamber materially above the discharge ends of thecentral uptake or uptakes.

l2. Improved water-purifying apparatus, comprising a reaction tank andmeans whereby the water iows upward therein, an inverted hollow conedividing the interior of the tank into lower and upper chambers,

and uptake communications of a combined cross-section less than thecross-seetion of the tank, said communications being divided between thecentral and outer regions of the cone and leading from the lower chamberat lower and higher levels into the upper chamber at lower and higherlevers respec.- tively, and a sludge discharge distinct from saidcommunications leading from the low part of the upper chamber at thecentral part of the cone.

13. Improved water-purifying apparatus, comprising a reaction tank andmeans whereby the water flows upward therein, an inverted hollow conedividing the interior of the tank into lower and upper chambers, anduptake communications of a combined cross-section less than thecross-section of the tank, said communications being divided between thecentral and outer regions of the cone and leading from the lower chamberat lower and higher levels into the upper chamber at lower and higherlevels respectively, and a sludge discharge distinct from saidcommunications leading from the upper chamber at a lower level than thedischarge of the central uptake communication.

14. Improved water-purifying apparatus, comprising a tank and meanswhereby the water flows upward therein, a hollow cone dividing theinterior of the tank into lower and upper chambers, uptakecommunlcations between the chambers of a combined cross-section lessthan the cross-section of the tank, said communications comprising setsleading from lower and higher levels in the lower chamber to lower andhigher levels respectively in the upper chamber, whereby zones ofmaterially lowered velocity are produced in the two chambers, and asediment discharge from the upper chamber distinct Jr'rom said uptakes.

15. Improved water-purifying apparatus, comprising a tank and meanswhereby the water iows upward therein, an inverted hollow cone dividingthe interior of the tank into!k lower and upper chambers, uptakecommunications between the chambers of a combined cross-section lessthan the crosssection of the tank, said communications comprising setsleading fromA lower and higher levels in the lower chamber to lower ahdhigherflevels respectively in the upper chamber, whereby zones ofmaterially lowered velocity are produced in the two chambers, and asediment discharge pipe leading down from the central low part ofthecone section of the tank, said communications comprising sets one ofwhich leads'through the central part of the cone and the other of whichleads lthrough the outer part of the cone, one set having its inlet andoutlet ends materially higher than the inlet and outlet ends of theother set, whereby zones of materially lowered velocity are produced inthe two chambers. f

In testimony whereof, I have signed my name to this speoication, in thepresence of two subscribing witnesses.

' HANS REISERT. Witnesses: K

LOUIS VANDORY, GERTRUD BoNA.

